As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A BURNING ODOR COMING FROM LOWER EFIS TUBE AFTER BLANKING OUT. PERFORMED VISUAL INSPECTION OF EHSI WIRING IAW WDM 34-26-00, NO DEFECTS NOTED. IDENTIFIED BURNING ODOR WITHIN PILOTS EHSI. PERFORMED REPLACEMENT OF PILOT EHSI IAW AMM 12-A-34-26-02-00A-920A-A. OPS TEST OF EHSI GOOD IAW AMM 12-A-34-26-00-00A-903A-A. NO FAULTS FOUND AT THIS TIME.